Lasting machine



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LASTING MACHINE Filed April 19, 1935 15 Sheets-Sheet 2 Nov. 3, 1936.

J. c. JORGENSEN LASTING MACHINE Filed April 19, 1955 15 Sheets-Sheet 3 ifMQT Nov. 3, 1936. J. c. JORGENSEN 2,059,241

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LASTING MACHi'NE Filed April 19, 1935 15 Sheets-Sheet 1s my 908 a I Z ggfgz Patented Nov. 3, 1936 UNITED STATES PATENT OFFICE LASTING MACHINE Application April 19, 1935, Serial No. 17,290

56 Claims.

This invention relates to lasting machines, and is herein illustrated as embodied in a heel-endlasting machine of the same general type as disclosed in United States Letters Patent No. 1,583,044, granted on May 4, 1926 upon an application of C. H; Hoyt, but provided with wiping and tacking mechanism constructed in many respects substantially as disclosed in Letters Patent No. 1,852,015, granted on April 5, 1932 upon an application of mine. It is to beunderstood, however, that in various novel aspects the invention is not limited to machines of the illustrated type or tomachines for las'ting'the heel ends of shoes.

In machine organizations of the character disclosed in the above-mentioned Letters Patent the heel-lasting wipers are operated by a path cam throughforce directed lengthwise of a shaft whichcarries the cam. One object of the present invention" is to minimize end thrust of the cam shaft in the wiper operation; and for this purpose, in the construction herein shown, the advancing movement of the wipers lengthwise of the shoe and their closing movements laterally of the shoe are effected respectively by different members which are movable respectively in opposite directions and are operated by different cams on the cam shaft, so that the force tending to move the shaft in one direction in effecting the advancing movement of the wipers is substantially balanced by the force tending to move it in the opposite direction in effecting the closing of the Wipers. This minimizes wear and also reduces the amount of power required to operate themachine. Novel features are also to be recognized in mechanism provided for closing the wipers by the movement of one of the above-mentioned members, including means whereby the Wipers may be preliminarily adjusted toward or from each other for shoes of different widths.

As in prior machines of the illustrated type, the machine herein shown includes a heel band for clamping the upper materials about the heel end of the last, and the invention further provides novel means for controlling the heel band. In accordance with one feature provision is afforded for quickly adjusting both the forward ends of the heel band simultaneously in the same direction to the right or the left relatively to the rear end of the band, so that the band will properly position right or leftshoes relatively to the same wipers as more particularly hereinafter explained. As illustrated; the heel band is closed and opened laterally of the shoe through a pair of bell-crank leversoperated by rack bars which are movable both in the same direction to close or to open the band, and the forward ends of the band are adjusted as above described by movements of these rack bars respectively in opposite directions through a member connected to both of them. Novel means is further provided for adjusting the forward ends of. the heel band toward or from each other for'shoes of different widths, this adjustment in the construction shown being effected by relative movements of 'twoconnected members which are movable together in the same direction lengthwise of the shoe to close or open the band. Improved means is also provided for controlling the heel band in locations opposite the corners of the heel end of the shoe tov insure adequate pressure'of the band on theshoe in these locations.

As'common heretofore in machines of the illustrated type, the machine herein shown is provided with a plurality of drivers for driving H fastenings, preferably tacks, to fasten the upper in lasted position; and in accordance with a further feature of the invention the driver-operating means is so constructed as to operate with less force if the machine is run idly, i. e., with no shoe on the shoe support, than when it is operating on a shoe. This serves to lessen the force of impact of stop mechanism which limits the movement of the driver-operating means, and accordingly minimizes noise and wear and tear when the machine is run idly, as it may be, for example, for test purposes. In the construction shown the drivers are operated, as heretofore, by a spring-impelled member, and for the purpose in view there is provided spring means which operates this member with comparatively little force if there is no shoe in'the machine and additionalspring means, controlled by a shoe on the shoe support, for increasing the force with which the member is operated in the presence'of such a shoe.

The invention further provides means whereby the machine may be readily adapted to drive the fastenings only'part way into a shoe in case, for example, it may be desired to secure the. upper materials permanently in lasted position by adhesive and to use thefastenings only for holding the upper temporarily until the adhesive has hardened. For this purpose provision is afforded for quickly adjusting the above-mentioned stop mechanism to prevent the drivers from driving the fastenings all the way into the shoe. In the construction, shown, as heretofore, the fastenings are driven through openings in the wipers, and in order to permit the retractive movement of the wipers without interfering with such partially driven fastenings, there is provided means for moving the shoe heightwise far enough to withdraw the fastenings from the openings in the wipers before the latter are retracted. When the fastenings are thus only partially driven, it is desirable that the driver-operating means shall operate with less force than when they are fully driven, and accordingly the construction shown is further such that in partially driving the fastenings this means operates only with the same force with which it would operate if there were no shoe in the machine. For this purpose, provision is afforded for maintaining inoperative, even though there is a shoe in the machine, the additional spring means above referred to as controlled by the shoe for operating the spring-impelled member.

The above and other features of the invention, including also novel means adapting the machine to operate on long-legged boots, novel means for relieving the clamping pressure on the shoe in case the machine fails to complete its cycle because of abnormal resistance of the shoe to the movement of the wipers, and various novel details of construction and combinations of parts, will now be more particularly described by reference to the accompanying drawings and pointed out in the claims.

In the drawings,

Fig. 1 is a. view in front elevation of a machine in which the invention is embodied;

Fig. 2 is a view of the machine in left-hand side elevation, with parts broken away;

Fig. 3 is mainly a plan view of a portion of the structure, including the wipers and their operating mechanism;

Fig. 4 is a section mainly on the line IV-IV of Fig. 2, on an enlarged scale;

Fig. 5 is a section on the line V-V of Fig. 4;

Fig. 6 is a section on the line VIVI of Fig. 4;

Fig. 7 is a section on the line VIIVII of Fig. 1, on an enlarged scale;

Fig. 8 is a section on the line VIII-VIII of Fig. '7, on an enlarged scale, showing the heel band and its operating mechanism;

Fig. 9 is a section on the line IXIX of Fig. 8;

Fig. 10 is a section on the line X-X of Fig. 7 Fig. 11 is a section on the line XI2QZ of Fig. 10;

Fig. 12 is a section on the line X[IXII of Fig. '7;

Fig. 13 is a section on the line X[II-XIII of Fig. 12, on an enlarged scale;

Fig. 14 is a section on the line XIVXIV of Fig. 2, on an enlarged scale;

Fig. 15 is a section on the line XV-XV of Fig. 2, on an enlarged scale;

Fig. 16 is a section on the line XVI-XVI of Fig. 15;

Fig. 17 is a view in side elevation, on an enlarged scale, of a portion of the structure shown in Fig. 2, with parts broken away;

Fig. 18 is a section on the line XVIIIXVIII of Fig. 3;

Fig. 19 is a view partly in left-hand side elevation and partly in vertical section, showing the lower portion of the shoe support or jack and the mechanism for controlling the jack post;

Fig. 20 is a section on the line XX-XX of Fig. 19;

Fig. 21 is a view in front elevation of a portion of the structure shown in Fig. 19;

Fig. 22 is a developed plan view of some of the operating cams;

Fig. 23 is a perspective view of a portion of the starting and stopping mechanism;

Fig. 24 is a vertical section showing certain details of the wiping and tacking mechanism and illustrating the relation of this mechanism to the shoe prior to the inward movements of the wipers;

Fig. 25 is a vertical section illustrating the relation of the wiping and tacking mechanism to the shoe at the end of the inward movements of the wipers and showing more of the structure than is shown in Fig. 24;

Fig. 26 is a section on the line XXVI-XXVI of Fi 25;

Fig. 27 is a view similar to Fig. 24, but illustrating the positions of the parts when the tack drivers are at the end of their driving movements;

Fig. 28 is a plan view of a portion of the wiping and tacking mechanism with the parts in the same positions as in Fig. 25;

Fig. 29 shows in side elevation an alternative shoe support or jack so constructed as to adapt it to receive long-legged boots;

Fig. 30 is a plan view of a portion of the structure shown in Fig. 29;

Fig. 31 is a view similar to a portion of Fig. 25, but illustrating the positions of the parts when the tacks are driven only part way into the shoe; and

Fig. 32 shows in side elevation a portion of the tacking mechanism with the parts in the positions which they occupy at the end of the tackdriving operation when the tacks are driven as shown in Fig. 31.

The machine in which the invention is herein shown as embodied is, as above stated, a machine 01 the same general type as that disclosed in Letters Patent No. 1,583,044, but having wiping and tacking mechanism constructed in many respects substantially as disclosed in Letters Patent No. 1,852,015. The machine includes in its organization a heel band 2 for embracing and clamping the upper about the heel end of the last, wipers 4 for wiping the marginal portion of the heel end of the upper inwardly over the insole or other shoe bottom part, which may be referred to generically as the sole, means hereinafter described for driving tacks through openings in the wipers to fasten the upper, and a holddown 6 for engaging the heel end of the sole to determine the position of the shoe and last heightwise in the lasting operation. The shoe and last are mounted on a shoe support or jack which is movable to carry them lengthwise into position to be embraced by the heel band 2 and which has also means for carrying the shoe upwardly against the holddown 6.

The jack (Figs. 1 and 2) includes a heel pin or spindle 8 arranged to enter the usual spindle hole in the heel end of the last and mounted fast in a block II] which is movable with the last and shoe about an axis extending lengthwise of the shoe and located approximately at theheel-seat to permit each shoe to be so positioned that its heel seat extends laterally in substantially parallel relation to the plane of the wipers, as disclosed in Letters Patent No. 1,896,121, granted on February '7, 1933 upon an application of mine. As further disclosed in greater detail in Letters Patent No. 2,001,732, granted on May 21, 1935 upon another application of mine, the top face of the cone of the last rests upon a member l2 which adjusts itself to that face of the last by movement relatively to the spindle 0 and the block I0 about an axis extending Widthwise of the last. The. block I0 is mounted on a post I4, and clamped to this post is a forwardly extending bar I6 which carries means for supporting the forepart of the shoe and last. This means differs in no substantial respect from means provided heretofore for the same purpose in machines of the illustrated type. It comprises a toe rest I8 mounted on a casting 20 which is adjustable in directions heightwise of the shoe by a pinion H in the casting engaging teeth on an upwardly extending bar 22 on which the casting slides, the pinion being turned by a hand wheel 24 (Fig. 1). A ratchet wheel 26 which turns with the pinion 2I is engaged by a pawl 28 to hold the casting 20 and the toe rest thereon against downward move= ment from any adjusted position, the pawl being movable upwardly to release the ratchet wheel and permit lowering of the toe rest. The bar 22 extends upwardly from a holder 30 adjustably movable along the bar I0 for shoes of different lengths and held in adjusted position by a pair of pawls 32 (Fig. 2) the tails of which may be pressed toward each other to release the holder and permit its adjustment along the bar, the pawls engaging teeth on the bar.

The post I4 on which the above-described parts of the jack are supported is slidingly mounted in a holder 34 which is supported on two pins 36 (Fig. 19) for swinging movements in directions laterally of the shoe, substantially as disclosed in Letters Patent No. 2,001,732, to permit the heel end of each shoe to be readily centralized relatively to the heel band regardless of the locations. of the spindle holes in different lasts. Means differing somewhat in details from the construction shown in the last-mentioned Letters Patent is provided for limiting symmetrically opposite swinging movements of the holder 34 and for fixing the holder in a centralized position if desired. This means comprises a slide 30 (Figs. 19 and 21) movable downwardly and upwardly in a. recess provided in a depending portion of the holder 34 and confined in the recess by a plate 40 fastened to the holder. The slide 38 at its lower end has therein a recess 42 with diverging side walls arranged to be engaged by a lug 44 on a member 45 to limit the opposite swinging movements of the holder 34, the member 45 being secured to a casting 46 in which the above-mentioned pins 36 are mounted. In Figs. 19 and 21 the slide 38 is shown in its uppermost position, in which position it permits limited swinging movements of the holder 34 for the purpose described. By means of a knob 48 connected to the slide 38 through a slot 50 in the plate 40 the slide may be moved downward far enough to cooperate with the lug 44 to lock the holder 34 in a centralized position. The slide 38 is held either in its uppermost position or in its locking position by a pin 52 mounted in the holder 34 and pressed inwardly by a leafspring 54 so asto enter one or the other of two conical recesses 56 in the slide. When the slide 38 is in its uppermost position the holder 34 is nevertheless held normally in a centralized position by a spring 58 which is mounted partly in a recess in the member 45 and acts at its opposite ends on two depending lugs at the lower end of the holder 34, as will be evident by reference to Figs. 19 and 21.

The post I4 is supported at its lower end on a member 00 (Fig. 19) slidingly mounted in the holder 34, the lower end of the 'post having thereon depending fingers arranged to enter stepped recesses in the member 60 to support the post at different heights for lasts that vary considerably in height, in substantially the same manner as illustrated in Fig. 19a of the abovementioned Letters Patent No. 1,583,044. A finer adjustment of the height of the post may be effected by upward or downward adjustment of the member 60 through a screw 00 which is threaded therein, the head of this screw being supported on a cap 68 which is mounted for universal rocking movements on a stem I0 at the upper end of a rod I2. The rod 12 is movable upwardly and downwardly in a bearing in the casting 46 and is provided with a flange Id which by contact with the casting limits its downward movement. The upward movement of the rod I2 serves to lift the shoe by moving the member 00 and the post 84 upwardly, the rod being connected for this purpose to a slide '56 movable upwardly and downwardly in the lower end portion of the casting 46. When the shoe is first mounted on the spindle 8, however, the jack is in a forwardly inclined position, as illustrated in Figs. 2 and 19,

and the jack must be swung rearwardly to carry the heel end of the shoe to a position under the holddown 6 before the shoe is raised by the slide it. For the purpose of such swinging movement the jack casting 46 is supported rotatably on two pins 18 (Figs. 1 and 2) mounted in a bracket fast on the frame. For determining the initial forwardly inclined position of the jack there is pivotally connected to a pair of upwardly and rearwardly extending arms 82 of the casting 46 a bar 84 (Figs. 2, 4, 6 and 7) which is mounted in a slideway formed in a holder 00. The holder 86 is sleeved on a shaft 88 mounted in bearings in the frame for a purpose hereinafter described, so that the holder may turn as required by the slight raising and lowering of the forward end of the bar 84 in the swinging movements of the jack. To limit the forward swinging movement of the jack the bar 84 carries a pin 90 (Fig. 7) arranged to engage a shoulder on the holder 80. The weight of the jack is partially balanced by a counterweight 92 (Fig. 2) supported on a cable 94 which extends over a pulley 96 and is connected at its forward end to the arms 82 of the jack. movement of the jack, but does not prevent the latter from swinging forwardly to its idle position by its own weight.

The rearward swinging movement of the jack to carry the heel end of the shoe to a position within the heel band 2 and beneath the holddown 6, and the upward movement of the post I4 to force the shoe against the holddown, are effected by the operator prior to the starting of the power operation of the machine. For this purpose there is provided a treadle 98 (Fig. 2) which is pivoted at I00 on a bracket on the frame and is movable against the resistance of a spring I02 which bears downwardly on its rear end, the spring being engaged at its upper end by a member I04 threaded in the frame and adjustable to vary the stress of the spring. The treadle 08 is connected by a link I06 (Figs. 2 and 19) to one arm of a lever I03 which is fulcrumed on a rod IIO mounted on a bracket II2 on the lower end of the jack casting 40. The other arm of the lever I08 bears against the lower end of the slide I6. It will thus be evident that by the depression of the treadle 08 the slide I6 and the parts controlled thereby may be raised to force the shoe This facilitates the rearward swinging against the holddown 6, and it will be further evident that by reason of the relation of the link I06 to the fulcrum IIO of the lever I08 the depression of the treadle also serves to swing the jack rearwardly about the pins 18. Since, however, the shoe should not be raised until after it has been carried to a position under the holddown, the operator will hold the post I4 from rising by pressure of his hands on the shoe until after the jack has substantially completed its rearward movement. Near the end of the rearward movement of the jack a pin II3 (Fig. '1) on the bar 84 engages and forces rearwardly a spring-controlled plunger II 4 which is mounted in a member H5 fast on the holder 86. This plunger serves later to initiate the return movement of the jack which is completed by gravity.

After the starting of the power operation of the machine the jack and its post I4 are controlled automatically. For such control of the post I4 there is provided a lever II6 (Fig. 19) which is fulcrumed on a rod II1 on the bracket 80 and is provided at its forward end with a roll IIS lying in a transverse slot in the slide 16. At its rear end the lever H5 is enlarged and forked to provide arms on the ends of which are secured a curved rack bar I20. This rack bar is engaged by a pinion I22 which is mounted to turn on a fixed rod I24, and integral with the pinion is a ratchet wheel I26 (Figs. 19 and 20). This ratchet wheel is engaged and turned in. a counterclockwise direction (Fig. 19) by one or the other of two pawls I28 supported on a pawl carrier I30 which is mounted to turn about the rod I24. The pawls I28 are preferably mounted and controlled in the same manner as disclosed in Letters Patent No. 2,046,462, granted on July '7, 1936 upon an application of mine, which may be referred to for a more complete understanding of details not herein disclosed. It will be understood that when the pawl carrier I30 is turned in a counterclockwise direction (Fig. 19) about the rod I24 the ratchet wheel I26 and the pinion I22 are turned to force the jack post I4 upwardly. This serves to force the shoe more firmly against the holddown 6, and later to raise the shoe farther concurrently with an upward movement of the holddown, as more particularly hereinafter explained. To vary the amount of force thus imparted to the post I4 there is provided, as further disclosed in the last-mentioned Letters Patent, a control disk I32 which releases the pawls and permits them to engage the ratchet wheel after a variably determined amount of initial movement of the pawl carrier I30, the disk I32 being adjustable by a hand wheel I34 connected to a sleeve I36 on which the disk is formed. The pawl carrier I30 is operated by a lever arm I38 (Figs. 2, 4 and 17) which is integral with a sleeve member I39 mounted to turn on a rod I40 on the frame and is connected to the pawl carrier by a yieldable link comprising a rod I42, a spring I44 (Fig. 19), and another rod I46. The rod I42 is pivotally connected at its upper end to the lever arm I38 and is provided at its lower end with a disk I48 in engagement with the lower end of the spring I44. Slidingly mounted on the rod I42 is a casing I50 which serves as a housing for the spring I44 and is connected to the pawl carrier I30 by the rod I46. It will be understood that operative movement is imparted to the pawl carrier by upward movement of the lever arm I38 and that the spring I44 may yield more or less in response to resistance of the holddown to upward movement of the shoe. The recess in the rear end of the lever I I6 in which the pinion I22 is located is inclosed on opposite sides by two shield plates I52 which are fastened to the bracket 80 and between which the lever is movable.

The automatic control of the jack with respect to swinging movement about the pins 18 is effected through the bar 84 (Figs. 6 and '1). For this purpose the bar is provided with rack teeth I54 engaged by a pinion I56 which is keyed to the shaft 88, and integral with this pinion is a ratchet wheel I58 see also Fig. 1'7) which is engaged and operated by one or the other of two spring-pressed pawls I60 pivotally mounted on a pawl carrier I62. This pawl carrier is rotatably mounted partly on the hub of the ratchet wheel I58 and partly on a sleeve I64 on the shaft 88, this sleeve having formed on its inner end a disk I66 which releases the pawls and permits them to engage the ratchet wheel after a variably determined amount of initial movement of the pawl carrier. The disk I 66 is adjustable by a hand wheel I68 connected to the sleeve I64, so as to vary the amount of movement imparted to the ratchet wheel I58 and the pinion I56 by the pawls I60. Operative movement is imparted to the pawl carrier I62 through a link I10 (Fig. 17) by a lever arm I12 which is integral with the previously mentioned sleeve member I39 and therefore swings with the lever arm I38 about the rod I40. It will thus be seen that movement is imparted to the jack by the lever arm I12 to force the shoe more firmly backward against the heel band simultaneously with the movement of the lever arm I38 to force the jack post I4 upwardly.

Movement of the two lever arms I38 and I12 in a counierclockwise direction (Fig. 17) for the purposes above described is eifected by a path cam I14 (Figs. 2, '7, and 22) formed in a cam drum I16 which is fast on a forwardly and rearwardly extending cam shaft I18 mounted in bearings in the frame of the machine. The cam I14 engages a roll I80 carried by a slide I82 (Figs. 2 and 18) which is horizontally movable in guideways on the frame. The slide I32 is provided with rack teeth I84 in engagement with teeth formed on one arm of a lever I86 which is pivoted on a pin I88 on the frame, and the other arm of this lever is connected by a link I00 to an arm I92 projecting from a member I94 rotatably mounted on the rod I40 at one end of the sleeve member I38. Mounted in another arm I96 of the member I84 is a pin I98 (Fig. 1'?) arranged to engage the upper face of a lug 200 formed on a block 202 (see also Fig. 4) which is secured to the sleeve member I39. It will thus be seen that as the member I94 is turned in a counterclockwise direction (Fig. 17) it serves through the pin I98 to swing in the same direction the two connected lever arms I38 and I12. Since the lever I86 is operated positively by the cam I14 and acts positively, through the connections described, on the bar 84 connected to the jack, the swinging movement imparted to the jack by the cam I14 is a positive movement. As hereinafter more particularly described, such positive rearward movement of the jack, accompanied by upward movement of the jack post I4, occurs shortly after the starting of the power operation of the machine simultaneously with the closing of the heel band 2 against the side of the shoe before the wipers 4 begin to operate on the shoe. As shown in Fig. 22, moreover, the cam I14 is so shaped that at a later stage in the cycle of the machine, immediately prior to a second inward wiping movement of the wipers over the heel seat, the jack is operated to force the shoe still more firmly back against the heel band and the jack post I4 .is further'raised, coincidently with an upward movement of the holddown 6, to position the bottom of the heel end of the shoe slightly higher in the second overwiping movement of the wipers than in their first overwipingmovement.

Before the jack receives its first positive rearward movement in the power operation of the machine as above described, it is operated upon by additional means to press the shoe yieldingly back against the heel band while the heel band is still in an open position. For this purpose there is keyed tothe shaft 88 (Figs. 5 and 6) a ratchet wheel 204 which is operated by one orithe other of two spring-pressed pawls 286 mounted on a pawl carrier 288. The pawl carrier 208 is mounted in part on'the hub of the ratchet wheel 204 and in part .on a sleeve 210 .on the shaft '88 for turning movement about the axis of the shaft. Formed on the inner'end of the sleeve 218 is a control disk 2:!2 which releases the pawls 286 to permit them "to act on the ratchet wheel at a variably predetermined time after the starting of the movement of the pawl;carrier 288, the disk being adjustable to varysuchtimeof engagement of the pawls with the ratchet wheel by means of a hand wheel 2.14 connected to the sleeve 2). The pawl carrier 268 is operated through a link 216 by a lever 2l8 (Fig.18) which is mounted to turn on .a pin 2.20.0n the frame. The link 2 l6 extends through .apin [222 which is swiveled in the lower arm oftthelever 21.8 and is engaged on one side by a flange 224 on the link and on the other side of a member226 slidingly mounted on the link. Between the member 226 and another member228 which is held on the link by nuts 230 is a compression spring 232. It will thus be seen that when the lever 1218 is swung in a clockwise direction (Fig. 5) it acts yieldingly through the spring 232 on the link 216 to turn the pawl carrier 268 andthrough the pawls 206 to turn the shaft 88 on which the pinion I56 engaging the bar 84 is secured as hereinbefore described. It will be evident that in such turning movement of the shaft 88 the ratchetwheel I68 turns relatively to the pawls I60 through which the shaft is later operated to "impart the positive movement to the jack as previously described. For operating the lever 218 there is provided a slide 234 (Figs. 5 and 18) having rack teeth 236 in engagement with teeth on the upper arm of the lever, this slide carrying a roll 238 "engaged by a path cam 248 (Figs. '2, "'1 and 22) in the cam drum I16.

The heel band 2 may be formed, for example, as customary heretofore, of leather molded in approximate conformity to the contour of the heel end of a shoe but sufficiently flexible to conform to small variations in the contours of shoes of diiferent stylesand sizes. ,At its rear end theband is secured to an angularclip 242 (Fig. '7) supported by a screw 243 onthe lower end of a cylindrical stem 24.4 extending downwardly from a member 246 which is supported'on a slide 248, the member 246 being arranged to serve as an abutment for engagement with the upper portionof the rear face of the heel band. Near its front ends the heeliband is supported on angular clips ."353, one of which is shown most clearly in Fig. 25, these clips providing guideways along which the opposite side portions of the band may slide in directions lengthwise of the shoe. Each of the clips 250 is secured to the lower end of a cylindrical stem 252 extending downwardly from a block 254 arranged to bear against the upper portion of the side of the band, the stem 252 being mounted for rotation and also for limited upward movement in a slide 256 supported on an arm 258 (Fig. 8). Each arm 25B is mounted to swing in directions widthwise of the shoe about a rod 266 on the frame and is operated by means hereinafter described to effect the closing and opening of the heel band. Each slide 256 is adjustable in directions lengthwise of the shoe on the arm 258 on which it is mounted, and is secured in adjusted position by a bolt 262 which extends through a slot in the slide.

Mounted to swing about a stud 264 which is threaded in the member 226 are two curved arms 266 on which are pivotally mounted blocks 268 arranged to engage the outer face of the heel band in locations substantially opposite the corners of the heel end of the shoe. Each arm 266 is engaged on its outer face, in .a location substantially opposite the block 268, by a plunger 218 supported on an arm 212 extending laterally from the member 226. The plunger 218 is slidingly mounted in a bushing 214 which is threaded in the arm 212, and is provided with a flange 216 arranged to engage a shoulder on this bushing to limit movement of the plunger in a direction toward the heel band. The plunger 216 has a stem 216 slidingly movable in an opening formed in a nipple 286 which is threaded in the bushing 214, and between this nipple and the plunger are mounted two springs. 282 and 284, the two springs performing the function of a single spring. The force with which the springs act may be varied by adjustment of the nipple 288. Light springs 286 abutting against the'arms 266 and portions of the member 246 hold these arms at all times in contact with the plungers 216. The bushings 214 may be turned by a wrench to adjust them inwardly or outwardly in the arms 212 and thus to vary the initial positions of the plungers 210 without altering the stresses of the springs 282 and 284. As the parts are.

initially positioned, the heel band is preferably held by the plungers 21!] with its rear-end portion spaced somewhat forwardly of the rear abutmerit 246, as shown in Figs. 7 and 8, this being permitted by a slot in the clip 242 through which the screw 243 extends. Accordingly when the shoe is forced yieldingly back against the heel band by the mechanism shown in Fig. 5 prior to the closing of the band. the plungers 218 yield against the resistance of their controlling springs 282 and 284 until the band in its rearward movement with the shoe seats against the abutment 246, the forward end portions of the band sliding upon the supporting clips 250. Insurance is thus afforded that adequate pressure will be applied through the band at the corners of the heel end of the shoe. A short upward movement of the band with the shoe when the shoe is raised between the first and second inward movements of the wipers is permitted by clearance between the clips 25!] and the lower faces of the slides 256 (Fig. 25) and between the clip 242 and the lower face of the slide 248 (Fig. 7). It will be understood that the member 246 and the parts supported thereon are raised with the band.

The slide 248 on which the heel band is supported at its rear end and on which also are supported the member 246 and the parts thereon, is 

